I wouldn't worry about it. It's mostly cosmetic issue, and a small one at that. (You didn't notice it until other people had mentioned it, right?) I don't believe anybody has really had further complications due to it.

We obviously care for our systems much better. *throws a knowing glance at the others*

Apparently so.

(I just remebered the time I dropped my GB Color into a lake. "long, long story." and it sat at the bottom for about 15,20 minuites in the mud at least 10 ft deep in water. We finally got it out, and to this day it works perfectly and so does the game.

During my lunch break, I called my best friend who just recently purchased a DS Lite. His system is without cracks. After that, he contacted some people he knew with DS Lites and sent me an email to let me know that one out of a dozen people he asked had a crack in theirs. So it seems isolated, whatever it is. But if Nintendo is willing to replace a DS over a dead pixel, a cracked hinge should warrant a similar result.